图示电路中,Ix为()
A.2A
B.5A
C.A
D.A
参考答案:B
Food safety issues, ____ will seriously affect the growth of teenagers and even the nation’s future.
A.if not solved properly
B.not if solved properly
C.if solved properly
D.not if properly solved
三叉神经痛患者在疼痛发作时上颌的痛性抽搐不包括
A.痛区潮红
B.眼结膜充血
C.出汗流涎
D.流泪
E.患侧鼻腔黏液减少